Dain, Sergio Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
cqg6_23_016.pdf (Publisher version), 189KB
Dain, S. (2006). A variational principle for stationary, axisymmetric solutions of Einstein's equations. Classical and Quantum Gravity, 23(23), 6857-6871.